Nuisance broadcaster was lost in CB radio

An Adelaide man who took over public airwaves with offensive broadcasts was lost in his own "unreal" world of citizen radio, a court has heard.

John Alexander Kiss has pleaded guilty to causing disruption or disturbance to radio communications on citizens band, or CB, radio - which truck drivers and council workers use.

Defence barrister Ian White says Kiss was depressed and anxious at the time but is sorry for what he has done and should not be jailed.

"He found himself so far into this world of CB radio - a world that did him no good," he said in sentencing submissions at the South Australian District Court on Monday.

"Speaking into a microphone rather than speaking with people face-to-face tends to be very isolating behaviour and leads to a sense of unreality."

Prosecutor Tim Heffernan said Kiss's offensive broadcasts not only disrupted but alarmed other radio users.

"The CB radio network is an important public amenity," Mr Heffernan said.

"It is an important facility, for example, for long-haul truck drivers.

"Dominating the airwaves in a persistent way has obvious problems."

Mr Heffernan said a prison sentence is appropriate for these reasons, as well as to deter nuisance CB radio broadcasters in future.

Kiss, a tradesman, wishes to move to Queensland to start a new life with his veterinarian girlfriend, the court heard.

"He has the potential to live and contribute much better than these charges show," Mr White said.

Kiss in his broadcasts had a particular grievance with one man, with both men holding mutual restraining orders, the court heard.

He will be sentenced in Adelaide on September 3.